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   <!-- Beginner's tutorial -->
   初学者教程
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   <h1>
    <!-- Beginner's tutorial -->
    初学者教程
   </h1>
   <p>
    <!-- Welcome to <b>Logisim-evolution</b> -->
    欢迎来到
    <b>
     Logisim-evolution
    </b>
   </p>
   <p>
    <!-- Logisim-evolution allows you to design and simulate digital circuits. It is intended as an educational tool, to help you learn how circuits work. -->
    Logisim-evolution 允许您设计和模拟数字电路。 它旨在作为一种教育工具，帮助您了解数字电路的工作原理。
   </p>
   <p>
    <!-- To practice using Logisim, let's build a XOR circuit - that is, a circuit that takes two inputs (which we'll call <var>x</var> and <var>y</var>) and outputs 0 if the inputs are the same and 1 if they are different. The following truth table illustrates. -->
    为了练习使用 Logisim-evolution，让我们构建一个 XOR 电路,即一个接受两个输入（我们将其称为
    <var>
     x
    </var>
    和
    <var>
     y
    </var>
    ）的电路，如果输入为 0，则输出 0 相同则为 1，不同则为 1。 下面的真值表说明了这一点。
   </p>
   <center>
    <table class="truthtable">
     <tbody>
      <tr>
       <th class="tspace">
        x
       </th>
       <th class="tspace">
        y
       </th>
       <th class="tspace">
        x XOR y
       </th>
      </tr>
      <tr>
       <td class="zerov">
        0
       </td>
       <td class="zerov">
        0
       </td>
       <td class="zerov">
        0
       </td>
      </tr>
      <tr>
       <td class="unov">
        1
       </td>
       <td class="zerov">
        0
       </td>
       <td class="unov">
        1
       </td>
      </tr>
      <tr>
       <td class="zerov">
        0
       </td>
       <td class="unov">
        1
       </td>
       <td class="unov">
        1
       </td>
      </tr>
      <tr>
       <td class="unov">
        1
       </td>
       <td class="unov">
        1
       </td>
       <td class="zerov">
        0
       </td>
      </tr>
     </tbody>
    </table>
   </center>
   <p align="center">
    <img alt="#########" class="notscal" src="../../../../img-guide/tutorial-xor-circ.png"/>
    <br/>
    <!-- We might design such a circuit on paper. -->
    我们可以在纸上设计这样的电路。
   </p>
   <p>
    <!-- But just because it's on paper doesn't mean it's right. To verify our work, we'll draw it in Logisim and test it. As an added bonus, we'll get a circuit that's looks nicer than what you probably would draw by hand. -->
    但仅仅因为它是在纸上并不意味着它是正确的。 为了验证我们的工作，我们将在 Logisim-evolution 中绘制它并进行测试。 另外，我们将得到一个看起来比您手工绘制的电路更好的电路。
   </p>
   <p>
    <!-- <a href="tutor-orient.html">Step 0: Orienting yourself</a><br> -->
    <a href="tutor-orient.html">
     第0步：整体概览
    </a>
    <br/>
    <!-- <a href="tutor-gates.html">Step 1: Adding gates</a><br> -->
    <a href="tutor-gates.html">
     第1步：添加门
    </a>
    <br/>
    <!-- <a href="tutor-wires.html">Step 2: Adding wires</a><br> -->
    <a href="tutor-wires.html">
     第2步：添加导线
    </a>
    <br/>
    <!-- <a href="tutor-text.html">Step 3: Adding text</a><br> -->
    <a href="tutor-text.html">
     第3步：添加文本
    </a>
    <br/>
    <!-- <a href="tutor-test.html">Step 4: Testing your circuit</a><br> -->
    <a href="tutor-test.html">
     第4步：测试电路
    </a>
    <br/>
    <!-- <a href="tutor-test.html">Step 5: Step by step mode</a> -->
    <a href="tutor-test.html">
     第5步：单步模式
    </a>
   </p>
   <p>
    <!-- Enjoy your circuit-building! -->
    享受你搭建的电路吧！
   </p>
   <p>
    <!-- <b>Next:</b> <a href="tutor-orient.html">Step 0: Orienting yourself</a> -->
    <b>
     下一步:
    </b>
    <a href="tutor-orient.html">
     第0步：整体概览
    </a>
   </p>
  </div>
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